Magazine-stop for weft-replenishing looms.



E. S. STIMPSON.

MAGAZINE STOP POR WEET BEPLBNISHING LooMs.

APPLICATION FILED MAY 8, 1911.

Patented Sept. 17,1912.

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E. S. STIMPSON.

- MAGAZINE STOP PoR WBPT REPLBNISHING LooMs.

APPLICATION FILED MAY 8,1911. v 1,3,?9 Patented Sept. 17, 1912.

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EDWARD S. STIMPSON, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COM-PANY, OF HOPEDAL'E, MASSACHUSETTS, A CORPORATION OF MAINE.

MAGAZINE-STOP FOR WFT-REPLENISI-IING LOOMS.

Specication of Letters Patent.

Patented Sept. 17,1912.A

Application filed May 8, 1911. Serial No. 625,887.

To all 'whom t may concern:

Be it known that I, EDWARD S.- STIMPSON, of Hopedale, in the county 0fWorcester and State of Massachusetts, have invented anew and ImprovedMagazine-'Stop for Weft-Replenishing Looms, (Case 13,) .of which thefollowing is a specification.

The present invention is an improvement used in connection with therotary battery or magazine of automatic weft-carrier replenishing loomssuch as exemplified by United States Letters Patent of' Northrop,

No. 529,940, November-27, 1894. In such `a correct position when thelweft-replenishing mechanism of the loom is brought into action, and asthe resultdamage is apt to occur either through the smashing of aweftcarrier or the breakage of some part of the loom mechanism.

The ob'ect of the present invention is to prevent tile action of theweft-replenishing mechanism whenever the magazine feed mechanism isinoperatively located with respect to the. magazine.

The present invention is anv improvement upon the invention set forth inUnited States Letters Patent of F G. and J. H. Cobb, No. 780,266,January 17, 1905.

In-accordance with the present invention the detent of the magazine feedmechanism itself is providedv with a stop which is interposed in thepath of a part of the weft-re- Vplenishing mechanism so as to stop theaction thereof Whenever the feeding mechanism is removed from feedingposition relatively to the magazine.

rIhe present improvement has been aplied to the feed mechanism which isshown 1n Letters Patent of the United StatesNo. 1,019,855, March 12,-1912; and inthe ac- `companying drawings the same feed mechapresentimprovement residing in the added part-s and their combination with theother lnstrumentalities;

In said drawings-Figure 1, is a vertical cross-section through therotarymagazine, battery orhopper of a weft-carrier replenishing loom andthrough the associated portions of the transferring mechanism. In Fig.1, the feed mechanism is shown in its normal position vand thetransferrer dog is shown liftel to its transferring position. Fig. 2, isa detail horizontal section in the plane indicated by the' line 2-2 inFig. l. Fig. 3, is adetail side View of the detent and the magazine stopwith which it is provided. Fig. 4, is a detail horizontal sect-ion inthe plane indicated by the line 1 -4 in Fig. l. Fig. 5, is a-perspectiveview of the feed pawl. Fig. 1, and showing also the lay and shuttle insection. In Fig. 6, the feed mechanism is shown in inoperative positionand the stop is shown obstructing the movement ofthe transferrer dog.

A, is the rotary magazine, batteryI or hopper turning on the fixed studB, and shown equipped with spare weft-carriers C. D, is theusualltransferrer turning on the stud E, held uplifted bythe spring il",and carrying the pivotal spring-uplifted transferrer dog G, which isnormally held depressed by the coperating devices of theweft-replenishing mechanism but which is permitted to rise under theinfluence of its spring when a transfer of weft-carriers is demanded. H,

All of effect a transfer of weft-carriers.

these features are similar in construction,V

organization and mode of operation with what has long been used in theNorthrop loom.

,The magazine has a fixed ratchet I, with which coperates a feed pawl J,to feed the magazine step'by step as the spare weftcarriers aretransferred one by one to the shuttle by the transferrcr D, and also adetent K, which normally restrains the magf azine from backwardrotation. The detent K, is pivoted at I), (see Fig. 3), to a stationary-part of the loom and it is weighted at la, so as to normally occupy theposition shownl in Fig. 1',coperating with the ratchet I, to preventbackward rotation of the magazine. rIhe detent has a tooth c, whichdirectly cngages the ratchet teeth. The feed pawl J has a iixed'pin d,which is journaled in a sleeve c, formed on the transferrer D. A

spring f, attached to said sleeve and' (indirectly)y to the pin d, actsto swing the feed pawl toward the ratchet. The feed pawl has a tooth L,which directly cooperates with the ratchet teeth. This tooth L, ispivotally mounted at g, on the feed pawl J, and it is pressed upwardlyby a spring It. A shoulderK i, of the tooth L, extends laterally betweenthe shank of the detent K, and the ratchet ward so as to clear theratchet.

I. The feed pawl J, has a forwardly projecting h'andle M, extendingbeyond the pe riphery of the magazine (as shown .in Figs. l, and 6) toenable the feed tooth L, to be swung clear of the ratchet, as shown inFig. 6, when the magazine is to be freed from the feed mechanism toermit 1t to be turned freely in refilling wit weft-carriers. Whenl toothof the ratchet and the spring f, then Swings the feed pawl inwardlytoward the ratchet so that the tooth L, is beneath the next ratchettooth. When the transferrer D, again rises under the influence of thespring F, the magazine is-rotatedone step so as to bring the next weftcarrier against the stop N, thereby positioning it roperly beneath thetransferrer D. :In al *of the respects thus far described the feedmechanism is similar to that set forth inthe above mentionedapplication. y

In accordance with the present invention the detent K, is provided witha magazine stop O. This sto is pivotally connected at s, to the outer enof a multiplying lever P, which at its inner end t, is pivoted to thedetent K. This lever P, 1sv centrally fulcrumedjon a fixed pin w,carried at the upperv end of a stationary bracket arm yQ. The lever P,is slotted at its fulcrum, as shown in Fig. 3, so as to compensate forthe dierent centers on which it and the detent K, swing. The stop O, hasa lengthwise extending slot in which enters a fixed guide pin y.'

The transferrer dog G, has an abutment R, which is immediately beneaththe stop O. When the feed mechanism occupies its nor-|`y mal position,shown in Fig. 1', `the stop 0,v

occupies a saciently elevated position so as not to, obstruct the upwardswing of the transferrer dog G, to -Iits transferring position. Fig. 1,shows the transferrer dog G, swung to its uplifted positionfwhere it isin position to be encountered by the lay bunter a, in order 'themultiplyingflever P, a small swi to effect a transfer of weft-carriers.When, however, the feed mechanism is swung forward, as shown in Fig. 6,to clear the ratchet I, of the magazine (thus leaving the magazine freetobe turned in either direction), the stop O, is moved downwardly to theposition shown in Fig. 6, where it obstructs the upward swingofv thevtransferrer dog Gr. Accordingly, should the weft replenishing mechanismbe then called inaction, the dog cannot swing upwardlyinto the path ofthe lay bunterla, and consequently'I there is no movement ofthetra'nsferrer.l Fig. 6, shows the magazine insuchian abnormal positionthat the lowermost and leading weftcarrier is then improperlyffplae'djwith respect to the transferrer,` so that'J- should the transferrerthen act aA smashjof `some sort would occur. This vis .prevented Vbythe' position which the stop O, then occupies. Since the stop O, isconnected withV the detent K, by of the detent suiiices to project thestop O, far enough down so as to prevent the lifting of thetransferrerdog to cooperative transferring position with respect to thelay bunter I. Consequently, a transfer is prevented except at such timeas the feed mechanism occupies its correct feeding position `withrespect to the magazine.

I claiml,

1. An automatic weftreplenishing loom having, 4in combination, a rotarymagazine carrying spare weft-carriers; a feed ratchet on Such magazine;a transferrer that transfers spare weft-carriers one by one into weavingposition; a spring uplifted transferrer dog carried by said transferrer;a feed pawl actuated by said transferrer and coperating with saidratchet; a detent cooperating with said ratchet to-prevent backwardymovement of said magazine, said detent aiid feed pawl being manuallymovable into inoperative position with respect to said ratchet; amovable stop coperating with said transferrer dog anda multiplying leverconnectin said detent and said stop, so that when sald detent is innormally operative relation with respect to the ratchet, said sto doesnot interfere with the movement o said dog, but when said detent ismoved away from normal position relatively to said ratchet, said stopprevents the functional movement of said dog.

2. An automatic weft replenishing loom having, in combination, a rotarymagazine carrying spare weftcarriers; a feeding ratchet on suchmagazine, a transferrer that transfers spare weft-carriers one by oneinto weaving position; `a feed pawl actuated by said transferrer andcoperating with said ratchet; a detent coperating with said ratchet toprevent backward movement of said magazine, said detent and feed pawlbeing movable intoj inoperative position with respect to said ratchet;`and a movableV stop connected to said detent, so that when said detentis in normally operative relation with respect to the ratchet, said stopdoes not interfere with the movement ofI said transferrer, but when saiddetent is moved away from normal position relatively to said ratchet,said stop prevents the functional movement of said transferrer.

3. An automatic weft replenishing loom having, in combination, a rotarymagazine carrying spare weft-carriers; a transferrer that transferssparer weft-carriers one by one into Weaving position; feed mechanismfor said magazine; a movable stop adapted t0 preventthe action of saidtransferrer; and a multiplying lever connecting said feed mechanism andsaid stop, so that When said feed mechanism is in normally operativerelation with respect to vthe magazine, said stop does not interferewith the movement of said transferrer, but When said feed mechanism ismoved away from normal position relatively to said magazine, said stopprevents the functional movement of said transferrer.

In Witness whereof, I have hereunto signed my name in the presence oftwo subscribing Witnesses.

EDWARD S. STIMPSON.

Witnesses:

C. W. PEGKHAM, E. D. OsaooD.

